echarts饼图绘制圆环线条

option = {
  tooltip: {
    trigger: 'item'
  },
  legend: {
    top: '5%',
    left: 'center'
  },
  series: [
    {
      name: 'Access From',
      type: 'pie',
      radius: ['23%', '30%'],
      avoidLabelOverlap: false,
      itemStyle: {
        borderRadius: 10,
        borderColor: '#CBEBFF30',
        borderWidth: 2
      },
      label: {
        show: false,
        position: 'center'
      },
      emphasis: {
        label: {
          show: true,
          fontSize: 40,
          fontWeight: 'bold'
        }
      },
      labelLine: {
        show: false
      },
      data: [
        { value: 1048, name: 'Search Engine' },
        { value: 735, name: 'Direct' },
        { value: 580, name: 'Email' },
        { value: 484, name: 'Union Ads' },
        { value: 300, name: 'Video Ads' }
      ]
    },
    {
      // 内层圆环
      name: '',
      type: 'gauge',
      splitNumber: 180, // 刻度数量
      radius: '20%', // 图表尺寸
      center: ['50%', '50%'],
      startAngle: 0,
      endAngle: -270,
      axisLine: {
        show: true,
        lineStyle: {
          width: 1,
          shadowBlur: 0,
          color: [[1, '#ffffff50']]
        }
      },
      axisTick: {
        show: false
      },
      splitLine: {
        show: false
      },
      axisLabel: {
        show: false
      }
    },
    {
      // 外层圆环
      name: '',
      type: 'gauge',
      splitNumber: 240, // 刻度数量
      radius: '33%', // 图表尺寸
      center: ['50%', '50%'],
      startAngle: 90,
      endAngle: -270,
      axisLine: {
        show: true,
        lineStyle: {
          width: 1,
          shadowBlur: 0,
          color: [[1, '#ffffff50']]
        }
      },
      axisTick: {
        show: false
      },
      splitLine: {
        show: false
      },
      axisLabel: {
        show: false
      }
    }
  ]
};

效果如下：